Conveyer belt cleaner



1946. w. A. VICK'ERS CONVEYER BELT CLEANER Filed Aug. 14, 1944 2Sheets-Sheet 1 Patented Jan. 29, 1946 UNITED STATES PAT ENT OFFICE ICLEANER William A. Vickers. Wanakena, N. Y. Application August14(,:;i::)No. 549,408

3 Claims.

The present invention relates to new and useful improvements in cleaningattachments for conveyer belts and has for its primary object to providea plurality of scraper blades supported in an inclined position withrespect to the surface of the belt and yieldably held in scrapinsengagement therewith to remove particles of materialwhich may cling tothe belt.

It is also an object of the present invention to provide supportingmeans for a group of scraper blades having their ends disposed inoverlapping relation with respect to each other and also providing achute attached to the scraper blade supporting means and adapted toreceive material scraped from the belt for depositing the same in thechute provided for the conveyer.

A still further object is to provide mean for easily and quicklymounting the scraper attachment in position with respect to the conveyerbelt without necessitating any changes in the construction thereof.

A still further object is to provide a device of this character ofsimpleand practical construction, which is efficient and reliable inperformance, relatively inexpensive to manufacture and otherwise welladapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming part hereof, wherein likenumerals refer to like parts throughout, and in which:

Figure 1 is a side elevational view of the scraper attachment shown inposition with respect to the conveyer belt.

Figure 2 is a top plan view thereof with parts broken away and shown insection.

Figure 3 is a side elevational view of a modified form of the invention.

Figure 4 is a partial cross section and elevational view thereof.

Figure 5 is a perspective view of one of the scraper blades, and

Figure 6 is a similar view of one of the attaching plates for theblades.

Referring now tothe drawings in detail and first with respect to theform of the invention illustrated in Figures 1 and 2 of the drawings,the numeral 5 designates a conveyer belt mounted for traveling over aroller 8 of conventional construc. tion, the roller being joumaled in asupporting frame I.

i .The belt cleaner comprises a substantially U-shaped bar 8 disposedtransversely of the belt and its ends are provided with trunnions a'pivotally supported in brackets 9 secured to the supporting frame I atopposite sides of the roller.

One of the trunnions 8' of the U-shaped supporting bar 8 is providedwith a crank or lever extension I0 having an opening II in the endthereof through which a rod I2 is freely inserted, one end of the rodhaving a hook I! engaged in an eye I 4 attached to the frame 1, whilethe other end of the rod I2 is provided with a stop IS with which oneend of a coil spring I8 is engaged, the spring being mounted on the rod12 and having its other end bearing against the free end of theextension III to yieldably urge the bight portion of the bladesupporting member 8 in a direction toward the surface of the belt 5 atthe under side of the roller Gas will be apparent from an inspection ofFigure 1 of the drawings.

A plurality of attaching plates H are welded or otherwise secured to thebight portion of the bar 8 and to each of which is secured a scraperblade l8 constructed of rubber or other suitable substantially rigidmaterial. The inneredges of the scraper blades I 8 are attached to thebar 8 by means of bolts l9.

As shown in Figure 2 of the drawings the attaching plates l1 and thescraper blades Ii} are inclined with respect to the surface of the belt5 and are disposed in overlapping relation with respect to each other sothat the entire surface of the belt will come into engagement with oneor more of the blades.

A chute 20 is attached to the bar 8 immediately beneath the blades I 8so that any material re-.

moved from the belt 5 will be deposited into the chute and conveyed tothe regular conveyer chute (not shown).

In Figures 3 to 6 inclusive, the scraper blade supporting bar is shownat 2| having outturned ends or trunnions 22 pivotally supported innotches 23 or brackets 2| secured to a supporting structure adjacent theroller 25 over which the belt 26 travels.

The attaching plates 21 are welded at one edge in an inclined positionto the bar 2| and to which the scraper blades 28 are attached by meansof the bolts 28 inserted through the aligned openings 30 and SI of thescraper blades and the attaching plates.

Thrust washers 32 are welded on the trunnions 22 to bear against thebrackets 24.

One of the trunnions 22 is formed with an angular crank or leverextension 33 through the end of which the rod 34 is freely inserted, therod being provided at one end with a hook ll anchored, as at 3!, to oneof the brackets 24,

while the other end of the rod It is provided The scraper bladesupporting member in the form of the invention illustrated in Figures 3and 4 may then be bodily removed by raising the same from the notches23. By the same token, so can the blade supporting member I in themodification shown in Figures 1 and 2 be removed, provided, of course,that the bearings for the trunnions 8' are notched as indicated moreclearly in Figure 2. 1

It is believed the details of construction, operation and advantages ofthe device will be readily understood from the foregoing without furtherdetailed explanation.

What I claim is;

1. A belt cleaner as herein described, the same comprising a scraperblade supporting member having a plurality of scraper blades attachedthereto, means pivotally supporting said member transversely withrelation to the belt with the blades in wiping contact with the surfaceof the belt, a lever extension secured rigidly at one end to one end ofthe blade supporting member, a rod freely inserted in and longitudinallyslidable through said lever extension and swingably supported at one ofits ends, a stop on said rod adjacent its free opposite end, and springmeans carried by the rod and at one end engaging the free end portion ofsaid lever extension of said supporting member and at its opposite endengaging the stop on said rod, thereby creating a pressing influence onsaid supporting member for urging the carried blades into wiping contactwith the belt.

2. A belt cleaner comprising a rockable scraper blade supporting memberhaving bladed provision for scraping contact with the belt, meanspivotally supporting said member transversely of the belt and yieldablyholding its bladed provision in wiping engagement with the surface ofthe belt and transversely across the belt, a lever extensionat one endof said bladed supporting member and extending radially from the pivotalaxis of said member, a rod freely inserted in and longitudinallyslidable through said lever extension, said rod being swingablysupported at one end thereof, and spring means carried by said rod andinterposed under constant compression between said lever extensionf-(afsaid bladed supporting member and an adjustable stop on the free endportion of said rod whereby to create a pressing influence on saidbladed supporting member for urging the bladed provision thereof intowiping contact with the belt.

3. The herein described belt cleaner comprising a rockable substantiallyU-shaped blade'supporting member disposed cooperatively adjacent andextending transversely of the belt and having a bladed provision on itstransverse body portion between the leg portions thereof for scrapingcontact with the belt, said member including trunnions at the ends ofits leg portions, bearing brackets located and supported beyond oppositesides or the belt and having notches therein removably receiving thetrunnions of said bladed supporting member for pivotally supporting saidmember-,a lever extension secured to one end of said bladed supportingmember and projecting radially from the pivotal axis of said memher, andspring means constantly active upon said lever extension of said bladedsupporting member so as to urge said member with its bladed provisioninto wiping contact with the surface of the belt.

. WILLIAM A. VICKERS.

